Fix typo preventing psmcomm from being enabled on BSD platforms (cherry picked from commit 1131f24a0e592c8db8f4ebe509a1cdc263be545a)
Fix typo preventing psmcomm from being enabled on BSD platforms
(cherry picked from commit 1131f24a0e592c8db8f4ebe509a1cdc263be545a)

philipn/xserver-xorg-input-synaptics,RsrchBoy/xserver-xorg-input-synaptics,philipn/xserver-xorg-input-synaptics,philipn/xserver-xorg-input-synaptics,RsrchBoy/xserver-xorg-input-synaptics